Window ventilator



Aug. 25, 1936. W. H. MAYNARD 2,051,997 WINDOW VENTILATOR Original Filed Oct. 11, 1934 2 Sheets-Sheet 1 115M012 WW Aug. 25, 1936. w. H. MAYNARD WINDOW VENTILATOR 2 SheetJs-Sheet 2 Original Filed Oct. 11, 1954 0 7/ n fi $1 azz Patented Aug. 25, 1936 UNITED STATES 2,051,991 WINDOW VENTILATOR William H. Ma ynard, Winoosld, Vt, assignor to Porter Screen Company, Wiriooski, Vt., a ournotation of Vermont Original application October 11, 1934, Serial No. 747,908. Divided and this application July 19,

1985,- Serial No. 32,205

' 4 Claims. (01. 98-99) My invention relates to extensible window ventilators and more particularly to novel and efficient means for. removably supporting such ventilators in awindow opening, this application being a division of my copending application Serial No. 747,908; filed October 11, 1934.

An adjustable window ventilatoroi the type illustrated in Fig.- 1 of the accompanying drawings is disclosed and described in my application, Serial No. 692,583; filed October 6; 1933, Such a ventilator comprises two connected sliding secl-' tions which are arranged for relative movement so that the structure may be extended or collapsed to fitany size window or opening, and when not in use the structure may be entirely collapsed for storage. It is desirable to provide means for supporting. such a ventilator inan opening. so that it will not and can not be accidentally collapsed to fall away from its support-. ing means.

The principal object of my invention is to provide supporting means adapted to prevent accidental collapsing of the sliding sections'of' an extensible window ventilator.

A further object of my invention isto provide supporting means adapted to prevent accidental collapsing of an extensible ventilator and also adapted to permit the ventilator toibe removed from the window or other opening-when not in use.

A further object is-to provide supportingmeans which allow the ventilator to be tilted atdiiferent angles'from'the window-sill.

A further object is to provide supporting means adapted both to prevent collapsing of the ventilator and to allow it to be-tilted' at different angles from the window-sill.

. A further object is to provide supporting means foran extensible window ventilator.

Other objects relate to the construction and mode of operation and will be' apparent noni'a consideration of the following description and the accompanying 'drawings which exemplify different embodiments chosen for'the purposes'of illustration.

In the drawings:

Fig. 1 is a perspectiveview of an extensible window ventilator and supporting means embodying 'my invention;

' Fig. 2 is a partial front eIevation of the window ventilatorandsupporting means shown in-perspective'in Fig-.- 1;

Fig. 3 is-anenlarged section taken on" the line 55: 3;3 of Fig; 2-, with -partsbroken awayz' Fig. 4 is an enlarged section taken on the line i 4 of Fig. 1;

Fig. 5 is a section through a window andan extensible ventilator showing another embodiment of supporting means; v p

Fig. 6 is a plan View with parts broken away and looking in the direction of the arrows 6-6 o 5;

Fig. 7 is a front elevation, with parts broken away, looking in the direction of the arrows 1-7 in Fig. 5; ,s

Fig. 8 is an elevation looking at the inner face of the supporting meansshownin Fig. 5 but with a diiferent embodiment ofrneans for hold ing the ventilator in various tiltedgpositions The ventilator is shown in phantom in two positions Aand nd 1 Fig. 9 is a partial section on the line 9-9 of In the embodiment herein shown for the purpose of illustration, rthe extensible ventilator is comprised of two relatively movablesections l0 and H in sliding face-to-ia c e relation. The frame of each section is formed of two longitudinal frame ele ments l2l2 with a transverse frame element l3 at its outerend, Each section holds a-pane of glass Zlso that the ventilator will not exclude light irom-thqroom. The inner. faces. of thelongitudinal frameelements l?- I2 areeach provided with undercut grooves H (see Figs a The two sections of the ventilator areslidably secured to each other by me a'ns oi a stud l5 (see Fig. 4), one end of which is firmly secured in the groove it of one longitudinal frame elemerit, e r and 9?. m. has an nlarged head It adapted to slide freely in the undercut groove M of the opposite longitudinal frame element of the other section. Ordinarily at least-four such studs are used; one near each end of each longitudinal"frameelement of one section. A ventilatorthus assembled provides'an efficienteasily operable extensible structure.

, A pair of end supporting members I! are firmly securedby means of screws l8-to the inner sides I 9 of the window casing with their lower ends resting'on the=window sill 20. Onlyon'e'of these supporting members'is shown 'in'Fig: 1 since only part'of the window is shown.

In the embodiment'illustrated"in Figs; 1; 2 and 3, each of these e'nd 's'upportingnrembr' *nna a longitudinal undercut greovefzs'nr "inner-race. The undercut grobve extends "longitudinally of the supporting member at an angle from the window-sill at which it is desired to have the ventilator extend.

Studs 25 having enlarged heads 26 (see Figs. 2 and 3) are attached to the outer edges of the transverse frame elements l3. The enlarged heads 26 are made of such a size that they will slide freely in the longitudinal undercut grooves 29 of the adjacent end-supporting members.

In operation the end-supporting members are fastened to the inner faces IQ of the window frame. The ventilator is extended or collapsed to fit the width of the particular window in which it is to be used, and the enlarged headed studs are then started in the upper ends of the respective longitudinal undercut grooves 29 of the end-supporting members, the Ventilator being slowly guided into place until the lower edge of the ventilator rests upon the window-sill. In this position the enlarged heads 26 of the studs are located within the longitudinal undercut grooves 29 of the end-supporting members. Air which enters under the open lower sash of the window 23 is directed inwardly and upwardly over the ventilator into the room.

In the embodiments shown in Figs. 5 to 9, inclusive, studs 25 with enlarged heads 26 are provided on the outer edges of the transverse frame elements l3 of each ventilator section and a longitudinal undercut groove 29 is provided in the inner face of each end-supporting member ll, said longitudinal undercut groove 29 being adapted to receive the enlarged heads 26 of the studs for sliding movement. To this extent this embodiment is similar to the embodiment shown in Figs. 1, 2 and 3.

Each end-supporting member IT has a transverse undercut groove 39 also located in the inner face thereof, said transverse undercut groove connecting with the longitudinal undercut groove 29.

In Figs. 5 and 6, I have illustrated as detachable holding means two resilient hooks 3|, one connected to each ventilator section near its outer end. These resilient hooks 3| cooperate with means on the end-supporting members H, such as holes 32, to hold the ventilator at different angles of inclination from the window-sill. Each hook 3| is made of resilient metal so that its free end may be sprung into and out of the holes 32.

Another embodiment of holding means is illustrated in Figs. 8 and 9. A strip of resilient wire 33 is provided adjacent the edges of each transverse undercut groove 30. The parallel arms of the holding means 33 are bent in a series of equal waves, the crests of the waves on one arm being opposite the crests on the other arm and the space between the opposite crests being less than the diameter of the stud 25.

In operation the enlarged heads 26 of the studs 25 are fitted into the upper ends of the undercut grooves 29 and the ventilator is slid into place as in the device illustrated in Figs. 1, 2 and 3, the lower edge of the ventilator resting upon the window-sill. The upper studs are located at such a distance from the upper edge of the ventilator that when the lower edge of the ventilator rests upon the window-sill the upper studs and their enlarged heads are opposite the end of the transverse undercut groove 30. Thus the ventilator may be rotated toward the window, the upper studs sliding in the transverse groove and the lower studs or the lower edge of the ventilator acting as a pivot whereby the angle at which the ventilator is inclined from the window-sill may be varied and the amount of air admitted to the room may be varied correspondingly.

The ventilator may be held at the desired angle of inclination by use of the holding means illustrated in Figs. 5 and 6 by inserting the free end 5 of the holding means 3| in the corresponding hole or holes 32.

To operate the holding means illustrated in Figs. 8 and 9, the ventilator is rotated about the lower studs or the lower edge of the ventilator as an axis, and the upper studs following the trans verse groove 30 successively force the respective crests of the resilient wire 33 apart, and since the crests spring back to their original position the upper studs are held in the desired seat comprising respective opposing troughs of said holding means.

The present disclosure is for the purpose of illustration only and this invention includes all modifications and equivalents which fall within the scope of the appended claims.

I claim:

1. In an extensible ventilator comprising relatively movable sections in sliding face-to-face relation, a stationary end-supporting member adj acent the outer end of each of said sections, each of said supporting members having an undercut groove in the face adjacent the outer end of the adjoining ventilator section, each of said grooves extending substantially parallel to the plane of the adjoining ventilator section, and the outer ends of said sections each having a stud with an enlarged head adapted to slide in the undercut groove of the adjacent supporting member, said enlarged headed studs and said undercut grooves cooperating to prevent relative face-to-face movement of said movable sections.

2. In an extensible ventilator comprising two relatively movable sections in sliding face-to-face relation, each of said sections having a transverse frame element at its outer edge, stationary endsupporting members for attachment in face-toface relationship with the inner sides of a window casing, each of said supporting members having an undercut groove on its inner face, a stud on the outer edge of each of said transverse frame elements, said studs having enlarged heads on their outer ends adapted to slide in the respectively adjacent undercut grooves of the endsupporting members and to cooperate therewith to prevent relative face-to-face movement of the ventilator sections.

3. In an extensible ventilator comprising relatively movable sections in sliding face-to-face relation, stationary end-supporting members adjacent the outer ends of said sections, each of said end-supporting members having a longitudinal undercut groove and a transverse undercut groove connecting with said longitudinal undercut groove, both grooves being in the face of said supporting member adjacent the outer ends of said ventilator sections, each of the outer ends of said sections having at least two studs on its outer edge, each stud having an enlarged head adapted to slide in the longitudinal undercut groove of the adjacent end-supporting member, the enlarged head of the upper stud on each of said sections being also adapted to slide in the transverse groove of the adjacent end-supporting member.

4. In an extensible ventilator comprising relatively movable sections in sliding face-to-face relation, stationary end-supporting members ad- ,jacent the outer ends of said sections, each of said end-supporting members having a longitudinal undercut groove and a transverse undercut groove connecting with said longitudinal undercut groove, both grooves being in the face of said supporting member adjacent the outer ends of said ventilator sections, each of the outer ends of said sections having at least two studs on its outer edge, each stud having an enlarged head adapted to slide in the longitudinal undercut groove of the adjacent end-supporting member,

10 the enlarged head of the upper stud on each of said sections being also adapted to slide in the transverse groove of the adjacent end-supporting member, resilient means in said transverse undercut groove, said resilient means having a plurality of crests and troughs, said troughs adapted,

to partially surround the said upper studs and to retain them from movement in said transverse grooves .when the ventilator is in a desired position.

WILLIAM H. MAYNARD. 

